Stuffing-box.



No. 654,382. A Patnted luly 3|, |900. H. S. DURAND R. K. MCLELLAN.

(No Model.)

IIIIIIIIIIIIIIIII um u HENRY s. DURAND, on ROCHESTER, ANDRORERTK.MCLRLLAN, OF NEW YORK, N. Y.; SAID MCLELLAN ASSIGNOR TosArD DURAND;

srUFFiNie-BOXL( srneIFIenrIoN forming para of Letters Patent No.654,382, date. Jury s1, 190e; i Application filed October 13,1899.Renewed May 19J 1900# Serial No. 17,295, (No modeLi To aZZ whom it mayconcern.-

Be it known that we, HENRY S. DURAND, residing at Rochester, in rthecounty of Monroe, and ROBERT K. MCLELLAN, residing at New York, boroughof Manhattan, county of New York, State of New York, citizens of theUnited States, have invented a certain new and useful Improvement inStuffingBoXes, of

which the following is a full, clear, and exact description, referencebeing made to the accompanying drawings, forming part of this vspecification.

This invention relates to improvements in stufting-boxeswhich are usedin connection with rotary shafts, such especially as the shafts ofscrew-propellers; and the invention consists of a stuffing-box properprovided with a shaft-bearing secured in the body thereof, the combinedstuffing-box and bearing being constructedas herein described.

On the accompanying sheet of drawings, Figure l is a fragmentv of alongitudinal and vertical section of a boat to which the invention isapplied; Fig. 2, a longitudinal section, on a larger scale,of the stufling-box surrounding the propeller-shaft; and Fig. 3, a cross-` sectionof the stuffing-box and shaft on thei y than the interior of the .part2. like.

plane :n x, Fig. 2. Similar reference-numerals designate part-s indifferent views.

This invention is intended not only to form all the useful functions ofa common stuffing-box in cooperation with a propeller-1V shaft, but alsoto subject the shaft to but com paratiVely-little friction and to renderit easy` to relieve the shaft from any unnatural pres;-

sure imposed upon it by a slightdispla'ceirient of the stuffing-box,such as is sometimes caused bya warping of the deadfwood or"V stern-postof a vessel, and to provide the shaft with an antifriction-bearing onthe out.- side of the vessel close to the propeller, andy consequentlyto render unnecessary the vuse of a shaft-bea`ring within the vessel'near the stuffing-box. Y

The invention is shown and described in,`

per-

. States NO. 629,343. Especially in boats of which this is a type arestuffing-boites embodyin g the invention manifestly superior to commonstuffing-boxes but they may be used with advantage also in largervessels comprising prope'llers driven by engines, as well as inconnection with other rotary shafts besides propellerlshafts. y Thepopelle'rishaft l, carrying the propeller l', is supported by twobearings, one being the bearing within the stufing-boxand the otherbeingV adjacent to the motor `at the front end of the shaft.

The body of the stuiiing-box comprises the parts 2 and 2,'and on it areears 20, by which itis fastened to the dead-wood lO, the smaller part 2of the body being in a hole in the deadwood. The interior diameter ofthe part2 is considerably greater than the diameter of the shaft, and atthe rear end of the part 2`is an.

internal shoulder 21. At the front end of this part is a hollowscrew-plug 22, which loosely surrounds the shaft and forms a shoulder22" Within the part 2. .N ext to this shoulder is a ring 23, of Babbittmetal or similar material, closely iitting the shaft, but not beingtight thereon and being smaller in diameter This ring is held againstthe inner end of the plug 22 or the shoulder 22 by a coil-spring 24,which loosely surrounds the shaft, the rear coil of the spring restingagainst the shoulder 2l. In place of the ring 23 there might be a groupof rings rcomposed of two or more rings 23 and a ring or ringsof feltalternating therewith. A hollow screw-plug 25 fits in and engages with'the part 2 of the body.` The perforated head 25" of this screw-plugloosely surrounds the shaft, and the stem of the plug has aninternalannular projection 26 formed on it next to its front end. Theparts 2 and 2 are united by an 'annular section, which'forms aninter-4nal shoulder 27 at the front end of the part 2. The screw-plug 25contains aring 28, of Babfbittfrnetal or similar material, which ts theshaft closely,`but is not tight thereon, and

whose diameter is less than the interior diameter of the stem of theplug. This ring is kept in contact with the inner surface of the head25* of the plug by a coil-spring 29, loosely IOO s`u1roundingthe shaftand making contact at rings secured ina case.` The diameter of the case3 is somewhat less'that the interiordi-k ameter of the part 2 of thebody of the'stuing-box. The bearing-rings and'31 conf tain grooves whichtogether form the ballchannel in which the balls 32 are confined behindand between the retaining-lips 30' and 3l'. Preferably bothof theserings are screwed into thecase 3 aud-locked therein by.

the means about to be described, so as to enable them both to be readilyremoved from the case; buton'e ofv them might be tightly pressed intothe case or be otherwise permanently fastened therein. The means forlocking one or both of the rings in the case consist-s of a screw .33,contained mainly in a threaded hole in the case 3, but engaging alsowith the thread of the bearing-ring, as ap.

pears by Fig. 2. The bearing-ring is locked in the case by driving thescrew 33 tightly against the bottom of the threaded hole, that causingthe thread of the screw to press firmly against the thread of the ringand keep the ring from turning. locked by loosening the screw 33, and itmay be turned in either direction to adj ust itwithout-taking the screwout of the casey The bearing is confined in the stuffing-box at thefrontend of the part 2', the case 3 of the bearing being clamped betweenthe shoulder 27 and the front end of the screw-plug 25. The

reaction of the case 3 on the screw-plug locks The interior of the bodyof the stuffing-box i is connected with a reservoir 4 by a pipe 40, thereservoir shown being a collapsible tube, for which, however, areservoir of another form might be substituted. The fillingof the -untila small quantity issues from its ends the stuffing-box is'kept properlysupplied and deterioration of the filling is prevented. The filling notonly excludes water from the stuffing-box, but it also lubricates theshaft-bearlng.

mally subjected by this stuffing-box is' but The bearing-ring is uu-4The friction to which the shaft is norlittle more than that which isgenerated in the antifriction-bearing alone, there being only a lightpressure exerted on the shaft by the rings 23 and. 28 and on the shaftand sleeve 34: by thesemitluid filling. If the dead-wood warps anddisplaces the stuffing-box slightly, either the stuffing-box does notbind the shaft, or, ifit does,usually thetro'uble thus caused may beeasily and quickly remedied. The displacement of the stuffing-box doesnot destroy either the contact between the shoulder 22' and the ring 23or that between the head of the plug 25'and the ring 28; but eachcontactchanges, the shoulder and head of the plug sliding a little'onthe rings and the rings tipping a little on the shaft, the mobile ordisplaceable fillingnot oerin g anyappreciable resistance to thisaction. A displacement of the stuffing-box sometimes will notandsometimes will cause the bearing to bind the shaft.

vshaft neither coincide nor thus intersect each other, and the troublecan usually'be remedied by loosening the screw-plug25, whereupon thebearing assumes a natural position with respect to thebody of fthestung-box and shaft, the chamber'in which the .bearing is confined beinglarger than the bearing-case, and afterward clampingthe bearing again inthe body by tightening the screw-plug.v

This stuffing-box and bearing might be used for a common shaft-bearing,and although the stuffing-box proper would not then perform the functionof excludingwater from the interior of avessel, yet that'use of thedevice is to be deemed a use of the invention.

Having thusldescribed our invention, what we claim as new, and desire tosecure .by Letters Patent, is

1. .A stuffing box comprising: a hollow body; rings making a continuouschangeable contact with surfaces at the ends of the body; and ashaft-bearing secured in the ,body between the rings; Vsubstantially. asdescribed.

2. A stuffing-box comprising: afhollow body; a shaft-bearing secured inthe body;

' `4. A4 stuffing-loox comprising: a hollow body; rings making acontinuous changeableV IOO IIO

IZO

contact with surfaces at the ends of the body; a semifluid fillingconfinedin the body; and a shaft-bearing comprising a ring of ballsimmersed in the illing; substantially as described.

5. A stuiing box comprising: a hollow body; rings making a continuouschangeable contact at the ends of the body with internal annularsurfaces,larger in diameter than the rings; and a shaft-bearing securedin the body between the rings; substantially as described.

6. A stuftingbox comprising: a hollow body; rings making acontinuouschangeable contact at the ends of the body with internal annularsurfaces, larger in diameter than the rings; a shaft-bearing secured inthe body between the rings; and a displaceable lling surrounding theshaft between the bearing and the rings; substantially as described.

7. A stuffingbox comprising: a hollow body; rings making a continuouschangeable contact with surfaces at the ends of the body; ashaft-bearing in the body, movable in directions transverse to the axesof the body and bearing; and means for securing the bearing in differentpositions in the body; substantially as described.

8. A stufingbox comprising: a hollow body; rings making a continuouschangeable contact with surfaces at the ends of the body; and ashaft-bearing secured in the body between the rings, the bearing being aballbearing having only a single row of balls; substantially asdescribed.

9. A stufiingbox comprising: a hollow body; rings making a continuonschangeable contact with surfaces at the ends of the body; and ashaft-bearing secured in the body between the rings, the bearing beingcomposed of a case, bearing-rings fixed in the case and forming aball-channel, and a single ring of balls in the ball-chann elsubstantially as described.

10. A stuffing box comprising: a hollow body; rings making a continuouschangeable contact with surfaces at the ends of the body; ashaft-bearing in the body, movable in directions transverse to the axesof the body and` bearing, and being composed of a case, bearing-ringsfixed in the case and forming a ballchannel, and a single ring of ballsin the ballohannel; and means for securing the bearing in differentpositions in the body; substantially as described.

1l. A stuiing -box comprising: a hollow body having the parts 2 and 2',and provided with an internal shoulder 27 at the inner end of the part2', and with a screw-plug 25 extending into the part 2'; rings making acontinuous changeable contact with the head of the screw-plug 25 and asurface at the front end of the part 2; and a shaft-bearing which isinserted in the part 2' and clamped therein against the shoulder 27 withthe screw-plug 25; substantially as described.

12. `A stuflngbox comprising: a hollow body having the parts 2 and 2',and provided with an internal shoulder 27 at the inner end of the part2', and with a .screw-plilg 25 extending into the Vpart 2 rings making acontinuous changeable contact with the head of the screw-plug 25 and asurface at the front end of the part 2; and a shaft-bearing which isinserted in the part 2' and clamped therein against theshoulder 27 withthe screw-plug 25, the bearing being movable in the body in directionstransverse to the axes of the bearing and body, and fixable in differentpositions between the screw-plug and shoulder; substantially asdescribed.

13. A stuffing-box comprising: a hollow body having the parts 2 and 2',and provided with internal shoulders 2l and 27 at the inner ends of theparts 2 and 2 respectively, and with screw-plu gs 22 and 25 extendinginto the parts 2 and 2 respectively, the plug 25 having an internalannular projection 26; a ring 23, smaller in diameter than the interiorof the part 2, and a ring 28, smaller in diameter than the interior ofthe screw-plug 25, the ring 23 making contactwith the end 22' of theplug 22, and the ring 28 making contact with the inside of the headofthe plug 25; a coil-spring bearing against the ring 23 and shoulder21,

and a coil-spring bearing against the ring 28 i and projection 26; and ashaft-bearing which is inserted in the part 2' of the body and clampedtherein against the shoulder 27 with the screw-plug25; substantially asdescribed.

14. In a stuifing-box or other device comprising a ball-bearing, thecombination of: a bearing-case; a screw 33 extending into a threadedhole in the case; bearing-rings in the case, one of the rings beingthreaded and engaging with a thread in the caseandwith that of the screw33; and a ring of balls between the bearing-rings; substantially asdescribed.

HENRY S. DURAND. ROBERT K. MCLELLAN. In presence of- C. C. MILLER, WM.J. HANDovER.

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